Wrench



(Model.)

T. WARREN.

WRENGH.

V-1\I.896,017. Patente'dJan, 1889.

UNITED STATES PATENT OFFICE.

THOMAS llARREN, OF CENTRALIA, ILLINOIS.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 396,017, dated January 8, 1889.

Application filed July 31, 1883. ,erial No. 281,552. (Model.)

T all whom it may concern:

Be it known that I, THOMAS lVARREN, of Centralia, in the county of Marion and State of Illinois, have invented certain new and useful Improvements in l/Ii'eiiclies; and I do hereby declare the following'to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference beio ing' had to the aecompanying,` drawing', which forms part of this specification.

- My invention relates to an improvement in wrenches; and it consists in the combination of a rigid shank or handle, a rigid jaw provided [5 with a suitable shank, which is pivoted at its inner end to the handle, and which jaw and shank move through a portion of a circle, a sliding jaw which moves upon the shank of the stationary jaw, a brace which is pivoted zo to the sliding jaw at one end and loosely connected to the handle at the other, and a sliding' collar or sleeve upon the handle, as will be more fully described hereinafter.

The obj ects of my invention are to pivot a rigid jaw to the handle so that it will move through a portion of a circle, and to place the sliding jaw thereon and connect it by means of a brace with the stationary handle, so that when a strain is brought to bear upon the 3o handle the rigid jaw in being moved through a portion of a circle will operate the sliding' jaw, and thus cause the jaws to close upon any ob ject to which they are applied, and to catch hold of the object with a force which is 3 5 proportioned to the power exerted by the op- 40 according to the thiekness of the object to which they are to be applied.

The accompanying drawing' represents a perspective of a wrench which embodies my invention, the parts being shown in one posi- 'tion in solid lines and in another position in dotted lines.

A represents a rig'id handle or shank, to which the shank of therigid jaw C is pivoted. The length of the shank B is a matter entirely of choice, and through it is made a slot, (J', so that the sliding` jaw F can be freely adjusted back and forth upon this shank in relation to the stationary jaw O.

Projecting` from the inner side of this sliding' jaw F is an extension or shank which projects through the slot in the shank B, and which has the head Gsecured to its outer end, and this head bears against the rear side of the shank B, so as to prevent the jaw F from becoming` displaced. The jaw F slides freely back and forth upon the shank B, and is operated entirely by the brace H, which is pivoted to it. This brace has formed upon its free end a proj ection, I, upon each of its sides, and these projections are made to catch in sets of notches J, which are formed in the inner edge of the handle or shank A. There may be any desired number of these notches, so that the free end of the brace can be adjusted from one to the other, according' to the distance it is desired to move the sliding' jaw F when at rest from the stationary one, C. Ihere the wrench is to be applied to a thin obj ect, the brace will have its free end applied to those notches which are nearest to the inner end of the shank B, and where the wrench is to be applied to objects of considerable' thickness the free end of the brace will be applied to the notehes farther removed from the pivot. The adjustment from one notch to the other is quiekly made, and the jaws are thus adjusted to be used upon articles of different thicknesses and sizes. In order to hold this free end in connection with any one of the notches, the sliding' sleeve or collar O is einployed, and this sleeve or collar is moved back and Vforth upon the handle A, so as to lock the free end of the brace into whatever position it has been adjusted. sleeve has an openin3- in one side, so as to slide past the end of the brace itself, but which catches over the pins or projections which extend from its side. 'When the end of the brace is to be adj listed from one set of notches to another, the sl iding` sleeve or collar is moved outward upon the handle toward the hand of the operator by pressure applied with the thumb, and then the end of the brace can be adjusted from one notch to another, as may be desired. As long' as the shank B is in a line with the handle A, or is pressed backward, so as to be slightly out of line there- This collar or IOO with, the j aws G F are separa-Ted to Their greatest disfanee from; eaeh other. 'hen The jaws have been plaeed upon opposiTe side? of an object and The handle is fm'cm'l forwawl To- Ward That side upon whieh The jaws are '1)hu3ed, The shan k B Tnrns upon its pivoT: and The rigid jaw C moves Through a Circle Toward The handie or Shank, and as the free end of The hraee is loeked rigidly in posiTion by means of the slidin coliar or s'ieeve`` so Thai: iTJ can have no niovenienT` the sliding jaw F is foreed Toward The rigid jaw by This hraee, so as to eo'mpei The two jaws To ('aTeh againsi* The ohjeet from opposiie sides and WiTh a foree in direef pro- 1iorT;ion To The amounT` of 'force whieh ie applied by The operaTor To The handle A. The very aet of applyin T'oree To The handle ('auses` The Two jawa to auTomaTi"aI1y approaeh each other for The pnrpose of ehunping T1he ohjeeT 'heTWeei'i Them. The moment pressure is removed Vfrom The handle and The handie is moved .Qiig'hily haeinvard, The ,jawa` are forced i apart, so as to automatically release the objeeT. As The jawa anTomaTieally approaeh and reeede from each other, al] neeessiTy of having' To adjust the sliding' jaw by hand To The hickness of the article is done away with.

ll'aving thns deserihed my invention, I chmur- In a wreneh, The combination of The handle provided With a series of notehes and the slid- 'ing sieeve or eoilar placed Jhereon, with The jaw provided with a Shafnk which is p'ivoted To The hand'lre, The siiding` jaw, and The braee provided with projeetions aTu iTst Vfree end to eaiteh :in The noTeheS in The handle, Hui'isTan- Tiaily as seT T`'rT:h.

Tn TeSTimony \\'hereof T aT'Tix my Asignature in presenee of Two wiTnesws.

'l`Il O MAS WQUUEi 

